What is the key length configured for both the Key Signing Key and the Zone Signing Key?

The key length configured for both the Key Signing Key (KSK) and the Zone Signing Key (ZSK) typically is 2048 bits in modern DNSSEC implementations. This length is chosen primarily for its balance between security and performance. Key lengths of 2048 bits provide a robust level of security against current cryptographic attacks, making them suitable for safeguarding zone data without excessively compromising performance during key operations.

While shorter key lengths like 1024 bits may have been acceptable in the past, they are now deemed insufficient due to advancements in computational power and the evolving threat landscape. Key lengths longer than 2048 bits, such as 4096 bits, provide even greater security but can result in slower performance, which is a consideration in practical implementations where efficiency is crucial.

In the context of DNSSEC, where both the Key Signing Key and Zone Signing Key play vital roles in ensuring the integrity and authenticity of DNS data, 2048 bits as a recommended standard represents a compromise that meets security requirements effectively while maintaining the necessary performance levels for DNS queries.